Use a BHandler attached to the application instead of a BLooper

When there is already a BApplication, SDL cannot start its own. In a
previous version, it instead started a separate looper. This results in
some extra complexity as there is now yet another thread to manage (in
addition to the main thread, the application thread, and the window
threads).

Instead, create a BHandler and attach it to the existing BApplication,
which allows it to receive messages in the already existing application
thread.

src/main/haiku/SDL_BApp.h

@@ -49,7 +49,7 @@ extern "C" {
 #include <vector>
 
 /* Forward declarations */
-class SDL_BLooper;
+class SDL_BHandler;
 class SDL_BWin;
 
 /* Message constants */
@@ -76,21 +76,21 @@ enum ToSDL
 };
 
 
-extern "C" SDL_BLooper *SDL_Looper;
+extern "C" SDL_BHandler *SDL_Handler;
 
 
-/* Create a descendant of BLooper */
-class SDL_BLooper : public BLooper
+/* Create a descendant of BHandler */
+class SDL_BHandler : public BHandler
 {
   public:
-    SDL_BLooper(const char* name) : BLooper(name)
+    SDL_BHandler(const char* name) : BHandler(name)
     {
 #ifdef SDL_VIDEO_OPENGL
         _current_context = NULL;
 #endif
     }
 
-    virtual ~SDL_BLooper()
+    virtual ~SDL_BHandler()
     {
     }
 
@@ -164,7 +164,7 @@ class SDL_BLooper : public BLooper
             break;
 
         default:
-            BLooper::MessageReceived(message);
+            BHandler::MessageReceived(message);
             break;
         }
     }

src/main/haiku/SDL_BeApp.cc

@@ -31,7 +31,7 @@
 #include <storage/File.h>
 #include <unistd.h>
 
-#include "SDL_BApp.h"   /* SDL_BLooper class definition */
+#include "SDL_BApp.h"   /* SDL_BHandler class definition */
 #include "SDL_BeApp.h"
 #include "SDL_timer.h"
 #include "SDL_error.h"
@@ -47,7 +47,7 @@ extern "C" {
 /* Flag to tell whether or not the Be application and looper are active or not */
 static int SDL_BeAppActive = 0;
 static SDL_Thread *SDL_AppThread = NULL;
-SDL_BLooper *SDL_Looper = NULL;
+SDL_BHandler *SDL_Handler = NULL;
 
 
 /* Default application signature */
@@ -137,8 +137,11 @@ static int StartBeLooper()
         }
     }
 
-    SDL_Looper = new SDL_BLooper("SDLLooper");
-    SDL_Looper->Run();
+    SDL_Handler = new SDL_BHandler("SDLHandler");
+    bool locked = be_app->Lock();
+    be_app->AddHandler(SDL_Handler);
+    if (locked)
+        be_app->Unlock();
     return (0);
 }
 
@@ -169,9 +172,6 @@ void SDL_QuitBeApp(void)
 
     /* If the reference count reached zero, clean up the app */
     if (SDL_BeAppActive == 0) {
-        SDL_Looper->Lock();
-        SDL_Looper->Quit();
-        SDL_Looper = NULL;
         if (SDL_AppThread) {
             if (be_app != NULL) {       /* Not tested */
                 be_app->PostMessage(B_QUIT_REQUESTED);
@@ -188,7 +188,7 @@ void SDL_QuitBeApp(void)
 #endif
 
 /* SDL_BApp functions */
-void SDL_BLooper::ClearID(SDL_BWin *bwin) {
+void SDL_BHandler::ClearID(SDL_BWin *bwin) {
     _SetSDLWindow(NULL, bwin->GetID());
     int32 i = _GetNumWindowSlots() - 1;
     while (i >= 0 && GetSDLWindow(i) == NULL) {

src/video/haiku/SDL_BApp.h

@@ -49,7 +49,7 @@ extern "C" {
 #include <vector>
 
 /* Forward declarations */
-class SDL_BLooper;
+class SDL_BHandler;
 class SDL_BWin;
 
 /* Message constants */
@@ -76,21 +76,21 @@ enum ToSDL
 };
 
 
-extern "C" SDL_BLooper *SDL_Looper;
+extern "C" SDL_BHandler *SDL_Handler;
 
 
-/* Create a descendant of BLooper */
-class SDL_BLooper : public BLooper
+/* Create a descendant of BHandler */
+class SDL_BHandler : public BHandler
 {
   public:
-    SDL_BLooper(const char* name) : BLooper(name)
+    SDL_BHandler(const char* name) : BHandler(name)
     {
 #ifdef SDL_VIDEO_OPENGL
         _current_context = NULL;
 #endif
     }
 
-    virtual ~SDL_BLooper()
+    virtual ~SDL_BHandler()
     {
     }
 
@@ -164,7 +164,7 @@ class SDL_BLooper : public BLooper
             break;
 
         default:
-            BLooper::MessageReceived(message);
+            BHandler::MessageReceived(message);
             break;
         }
     }

src/video/haiku/SDL_BWin.h

@@ -125,8 +125,8 @@ class SDL_BWin : public BWindow
 
 #ifdef SDL_VIDEO_OPENGL
         if (_SDL_GLView) {
-            if (SDL_Looper->GetCurrentContext() == _SDL_GLView)
-                SDL_Looper->SetCurrentContext(NULL);
+            if (SDL_Handler->GetCurrentContext() == _SDL_GLView)
+                SDL_Handler->SetCurrentContext(NULL);
             if (_SDL_GLView == _cur_view)
                 RemoveChild(_SDL_GLView);
             _SDL_GLView = NULL;
@@ -209,8 +209,8 @@ class SDL_BWin : public BWindow
     {
         Lock();
         if (_SDL_GLView != NULL) {
-            if (SDL_Looper->GetCurrentContext() == _SDL_GLView)
-                SDL_Looper->SetCurrentContext(NULL);
+            if (SDL_Handler->GetCurrentContext() == _SDL_GLView)
+                SDL_Handler->SetCurrentContext(NULL);
             _SDL_GLView = NULL;
             UpdateCurrentView();
             // _SDL_GLView deleted by HAIKU_GL_DeleteContext
@@ -572,7 +572,7 @@ class SDL_BWin : public BWindow
         if (keyUtf8 != NULL) {
             msg.AddData("key-utf8", B_INT8_TYPE, (const void *)keyUtf8, len);
         }
-        SDL_Looper->PostMessage(&msg);
+        be_app->PostMessage(&msg, SDL_Handler);
     }
 
     void _RepaintEvent()
@@ -584,7 +584,7 @@ class SDL_BWin : public BWindow
     void _PostWindowEvent(BMessage &msg)
     {
         msg.AddInt32("window-id", _id);
-        SDL_Looper->PostMessage(&msg);
+        be_app->PostMessage(&msg, SDL_Handler);
     }
 
     /* Command methods (functions called upon by SDL) */

src/video/haiku/SDL_bframebuffer.cc

@@ -39,8 +39,8 @@ static SDL_INLINE SDL_BWin *_ToBeWin(SDL_Window *window) {
     return (SDL_BWin *)(window->driverdata);
 }
 
-static SDL_INLINE SDL_BLooper *_GetBeLooper() {
-    return SDL_Looper;
+static SDL_INLINE SDL_BHandler *_GetBeLooper() {
+    return SDL_Handler;
 }
 
 int HAIKU_CreateWindowFramebuffer(_THIS, SDL_Window * window,

src/video/haiku/SDL_bmodes.cc

@@ -52,8 +52,8 @@ static SDL_INLINE SDL_BWin *_ToBeWin(SDL_Window *window) {
     return (SDL_BWin *)(window->driverdata);
 }
 
-static SDL_INLINE SDL_BLooper *_GetBeLooper() {
-    return SDL_Looper;
+static SDL_INLINE SDL_BHandler *_GetBeLooper() {
+    return SDL_Handler;
 }
 
 static SDL_INLINE display_mode * _ExtractBMode(SDL_DisplayMode *mode) {

src/video/haiku/SDL_bopengl.cc

@@ -39,8 +39,8 @@ static SDL_INLINE SDL_BWin *_ToBeWin(SDL_Window *window) {
     return (SDL_BWin *)(window->driverdata);
 }
 
-static SDL_INLINE SDL_BLooper *_GetBeLooper() {
-    return SDL_Looper;
+static SDL_INLINE SDL_BHandler *_GetBeLooper() {
+    return SDL_Handler;
 }
 
 /* Passing a NULL path means load pointers from the application */

src/video/haiku/SDL_bwindow.cc

@@ -37,8 +37,8 @@ static SDL_INLINE SDL_BWin *_ToBeWin(SDL_Window *window) {
     return (SDL_BWin *)(window->driverdata);
 }
 
-static SDL_INLINE SDL_BLooper *_GetBeLooper() {
-    return SDL_Looper;
+static SDL_INLINE SDL_BHandler *_GetBeLooper() {
+    return SDL_Handler;
 }
 
 static int _InitWindow(_THIS, SDL_Window *window) {